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United States Patent | 5,260,502 |
Fryer | November 9, 1993 |
Hydrocarbon contaminated soil from the excavation of a leaking underground storage tank is physically and chemically stabilized by combining the soil with a lime substance which is hydrated to form a flowable mixture. This mixture can then be used to fill the excavation and, if applicable, can be flowed around a replaced storage tank creating a low permeable liner. This monolithic mass prohibits hydrocarbons and heavy metals in the soil from leaching into the vicinity groundwater and prohibits leaking from possible future tank ruptures.
Inventors: | Fryer; David T. (P.O. Box 7035, Wyomissing, PA 19610) |
Appl. No.: | 818605 |
Filed: | January 9, 1992 |
Current U.S. Class: | 588/252; 106/794; 405/57; 405/128.45; 405/129.65; 405/266 |
Intern'l Class: | E02D 029/00; B65G 005/00 |
Field of Search: | 405/263,266,128,53,57,58,55,267,268 106/793,794 210/747,751 588/252,257 |
4028130 | Jun., 1977 | Webster et al. | 210/751. |
4149968 | Apr., 1979 | Kupiec et al. | 405/128. |
4375930 | Mar., 1983 | Valiga | 405/267. |
4432666 | Feb., 1984 | Frey et al. | 210/751. |
4687373 | Aug., 1987 | Falk et al. | 210/751. |
4913586 | Apr., 1990 | Gabbita | 210/751. |
4934866 | Jun., 1990 | Gage | 405/55. |
5013185 | May., 1991 | Taki | 405/128. |
5098224 | Mar., 1992 | Netzel et al. | 405/267. |
Foreign Patent Documents | |||
3014491 | Jan., 1991 | JP | 405/57. |